Question

Subject: Ecology

Describe the potential effect on the fish community of adding excess amounts of phosphorus to a lake.

Answer 1

Answer-

According to the given question-

Potential effect of excess phosphorus in a lake on fish community- .

• Nitrogen as well as phosphorus are main nutrients that promote growth of aquatic ecosystems such as algae,  aquatic plants, and these are main source of food as well as habitat for fish, as well as smaller organisms found in water.
• High amount of phosphorus leads to faster growth of algae and high growth of algae affect quality of  watery, availability of food resources, condition of habitats, reduces the level of dissolve oxygen which are needed for survival of fish as well as other aquatic organism.
• algal blooms reduces oxygen concentration and this causes illnesses in fish community as finally leads to death algal blooms also produce toxins which also affect aquatic community.
• Generally higher phosphorus concentration in aquatic environment increases the rate of eutrophication and leads to increase concentration of mineral and organic nutrients in aquatic environment and creates several problem such as water quality, effect on habitat, etc.